Oops, please ignore my previous message. I just started using a new mail
client which marked some of my old messages (which I had tagged interesting)
the same as new messages and I just blindly replied to them without checking
the date. Sorry about the spam.
Ravi
_
On Wednesday 23 April 2008 15:48:23 Christopher Barker wrote:
> > - Boost Python [1]. Especially if you want usable C++ integration. (ie.
> > more than basic templates, etc.)
>
> What's the status of the Boost array object? maintained? updated for
> recent numpy?
The boost.python array object is s
Let me say also that I tried using boost.python a while back to
interface numpy with c++, and, while I got some things working, I
found the distribution and packaging end of things an order of
magnitude more complicated than what I found with weave. Since weave
is built into scipy, as well as blit
On Wed, Apr 23, 2008 at 09:47:46PM -0400, Andreas Klöckner wrote:
> > Any numpy-specific stuff for sip?
> Not as far as I'm aware. In fact, I don't know of any uses of sip outside of
> Qt/KDE-related things.
Airbus uses it for heavy numerical work. They claim they have benchmarked
all the tools
On Mittwoch 23 April 2008, Christopher Barker wrote:
> What's the status of the Boost array object? maintained? updated for
> recent numpy?
The numeric.hpp included in Boost.Python is a joke. It does not use the native
API.
PyUblas [1] fills this gap, by allowing you to use Boost.Ublas on the C+
On Wed, Apr 23, 2008 at 3:46 PM, Thomas Hrabe <[EMAIL PROTECTED]> wrote:
> I have discovered a bug in ndarrayobject.h by the way. I do not know which
> numpy version we have installed here, but when compiling my c code with
> -pendantic I got this error:
>
>
> /home/global/python32/lib/python2.4/s
] on behalf of Christopher Barker
Sent: Wed 4/23/2008 1:15 PM
To: Discussion of Numerical Python
Subject: Re: [Numpy-discussion] access ndarray in C++
Christopher Barker wrote:
> Thomas Hrabe wrote:
> I'd poke around the wiki, and this mailing list archives, for more examples.
Th
Christopher Barker wrote:
> Thomas Hrabe wrote:
> I'd poke around the wiki, and this mailing list archives, for more examples.
This may help:
http://scipy.org/Cookbook/C_Extensions
-CHB
--
Christopher Barker, Ph.D.
Oceanographer
Emergency Response Division
NOAA/NOS/OR&R(206) 526-
Just to add something from personal experience in case it's useful...
I write a lot of code that works on numpy arrays that goes between
python and c++ (too used to OO to stick with pure c). I've been using
scipy.weave to interface to blitz++ arrays in my c++ code. The
blitz++ library has been wo
Andreas Klöckner wrote:
> IMO, all of these deal better with C than they do with C++.
True, though SWIG works OK with C++.
> There is also a
> number of more C++-affine solutions:
>
> - Boost Python [1]. Especially if you want usable C++ integration. (ie. more
> than basic templates, etc.)
W
On Mittwoch 23 April 2008, Christopher Barker wrote:
> NOTE:
> Most folks now think that the pain of writing extensions completely by
> hand is not worth it -- it's just too easy to make reference counting
> mistakes, etc. Most folks are now using one of:
>
> Cython (or Pyrex)
> SWIG
> ctypes
IMO,
Thomas Hrabe wrote:
> One can find multiple approaches to arrays, the old numeric array and
> the new ndarray. The new stuff seems to be backward compatible.
mostly, yes. numpy (ndarray) is the only option going forward, as it's
the only one being maintained.
> However, where is a free documen
thout using a custom
hack.
Finally, my primary aim is to access 3dimensional arrays of floats in C.
Best,
Thomas
-Original Message-
From: [EMAIL PROTECTED] on behalf of Thomas Hrabe
Sent: Tue 4/22/2008 2:38 PM
To: numpy-discussion@scipy.org
Subject: [Numpy-discussion] access ndarray in C
On 23 Apr 2008, at 17:50, Tommy Grav wrote:
>
> On Apr 23, 2008, at 11:26 AM, Joris De Ridder wrote:
>
>>
>> They are attached to the wiki page. Click on "Attachments" in the
>> menu
>> on the left.
>>
>> Joris
>
> Thanks. Didn't know that wiki's had that :)
>
> I tried you example on a Mac OS
On Apr 23, 2008, at 9:50 AM, Tommy Grav wrote:
>
> On Apr 23, 2008, at 11:26 AM, Joris De Ridder wrote:
>
>>
>> They are attached to the wiki page. Click on "Attachments" in the
>> menu
>> on the left.
>>
>> Joris
>
> Thanks. Didn't know that wiki's had that :)
>
> I tried you example on a Mac OS
On Apr 23, 2008, at 11:26 AM, Joris De Ridder wrote:
>
> They are attached to the wiki page. Click on "Attachments" in the menu
> on the left.
>
> Joris
Thanks. Didn't know that wiki's had that :)
I tried you example on a Mac OS X 10.5.2 (I am not using Scons) and got
[skathi:~/Work/myCode/pyC
On Mittwoch 23 April 2008, Albert Strasheim wrote:
> Hello,
>
> On Tue, Apr 22, 2008 at 11:38 PM, Thomas Hrabe <[EMAIL PROTECTED]> wrote:
> > I am currently developing a python module in C/C++ which is supposed to
> > access nd arrays as defined by the following command in python
>
> You might als
2008/4/23 Tommy Grav <[EMAIL PROTECTED]>:
>
> On Apr 22, 2008, at 9:56 PM, Joris De Ridder wrote:
>
> >
> > On http://www.scipy.org/JorisDeRidder I've just put an example how I
> > passed multidimensional Numpy arrays to C++ using ctypes. Perhaps
> > it's helpful for your application. I didn't
They are attached to the wiki page. Click on "Attachments" in the menu
on the left.
Joris
On 23 Apr 2008, at 17:19, Tommy Grav wrote:
>
> On Apr 22, 2008, at 9:56 PM, Joris De Ridder wrote:
>
>>
>> On http://www.scipy.org/JorisDeRidder I've just put an example how I
>> passed multidimensiona
On Apr 22, 2008, at 9:56 PM, Joris De Ridder wrote:
>
> On http://www.scipy.org/JorisDeRidder I've just put an example how I
> passed multidimensional Numpy arrays to C++ using ctypes. Perhaps
> it's helpful for your application. I didn't put it in the cookbook
> yet, because I would first
Hello,
On Tue, Apr 22, 2008 at 11:38 PM, Thomas Hrabe <[EMAIL PROTECTED]> wrote:
> I am currently developing a python module in C/C++ which is supposed to
> access nd arrays as defined by the following command in python
You might also be interested in:
http://mathema.tician.de/software/pyublas
Hi Sebastian,
> this is a great ( short ) recipe !
Thanks!
> Could you elaborate on the line
> "You need to compile myextension.cpp and make a shared library from
> it. The easiest way is to use Scons with the constructor file: !?
David already gave the answer. Scons allows you to make shared
>
> the compiler, the compiler flags, the linker, the linker flags, the
> location of Python.h, etc...
>
>
> > With a simple extension builder, we didn't encountered any bug
> > although we have a fair number of extensions.
>
>
> Building a helloworld like extension or say numpy.core is kind of the
Matthieu Brucher wrote:
>
> Having a good python extension builder is also more difficult than I
> first expected, too (you can't retrieve options for MS compilers from
> distutils, for example and I would like to support building with and
> without distutils' help).
>
>
> What are
>
> Having a good python extension builder is also more difficult than I
> first expected, too (you can't retrieve options for MS compilers from
> distutils, for example and I would like to support building with and
> without distutils' help).
What are these options that must be retrieved? With a
Matthieu Brucher wrote:
> Hi David !
>
> Is it possible to construct a Python module with Scons without
> tampering with different flags? I think you built your own builder
> (just like I did), but did you manage to put it in Scons 0.98 ?
Unfortunately, no. I had to make a choice on which featur
Hi David !
Is it possible to construct a Python module with Scons without tampering
with different flags? I think you built your own builder (just like I did),
but did you manage to put it in Scons 0.98 ?
Matthieu
2008/4/23, David Cournapeau <[EMAIL PROTECTED]>:
>
> Sebastian Haase wrote:
> >
>
Sebastian Haase wrote:
>
> Hi Joris,
> this is a great ( short ) recipe ! Could you elaborate on the line
> "You need to compile myextension.cpp and make a shared library from
> it. The easiest way is to use Scons with the constructor file:"
> !?
> How do you call Scons in your example !? On Window
On Wed, Apr 23, 2008 at 3:56 AM, Joris De Ridder
<[EMAIL PROTECTED]> wrote:
>
>
> On http://www.scipy.org/JorisDeRidder I've just put an example how I passed
> multidimensional Numpy arrays to C++ using ctypes. Perhaps it's helpful for
> your application. I didn't put it in the cookbook yet, becaus
On Tue, Apr 22, 2008 at 4:38 PM, Thomas Hrabe <[EMAIL PROTECTED]> wrote:
>
> Hi all!
>
> I am currently developing a python module in C/C++ which is supposed to
> access nd arrays as defined by the following command in python
>
> a = numpy.array([1,1,1])
>
> I want to access the array the follow
On http://www.scipy.org/JorisDeRidder I've just put an example how I
passed multidimensional Numpy arrays to C++ using ctypes. Perhaps it's
helpful for your application. I didn't put it in the cookbook yet,
because I would first like to test it a bit more. Up to now I didn't
experience an
Hi all!
I am currently developing a python module in C/C++ which is supposed to access
nd arrays as defined by the following command in python
a = numpy.array([1,1,1])
I want to access the array the following way and use the nd array data for
further processing in C.
mymod.doSthg(a)
The exam
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